Patents by Inventor Rodney V. Landreth

Rodney V. Landreth has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Unswitched, ultra low power, long range radar system
    Patent number: 7821446
    Abstract: An ultra low power, long range, robust radar system, for applications such as ionospheric sounding. The HF transmit signal and the received (reflected) signal are both unswitched and high frequency and share a path to a common loop antenna. The transmit signal originates at a local oscillator (LO), and is sufficiently low power to not saturate the receive signal path. A balun divides the local oscillator signal between the transmit path forward to the antenna and a mixer path, and also divides the received signal between the mixer path and the LO path. A mixer converts the mixed LO and received signal to baseband.
    Type: Grant
    Filed: March 5, 2009
    Date of Patent: October 26, 2010
    Assignee: Southwest Research Institute
    Inventors: Rodney V. Landreth, William D. Davis, Robert W. Robison
  • UNSWITCHED, ULTRA LOW POWER, LONG RANGE RADAR SYSTEM
    Publication number: 20100225529
    Abstract: An ultra low power, long range, robust radar system, for applications such as ionospheric sounding. The HF transmit signal and the received (reflected) signal are both unswitched and high frequency and share a path to a common loop antenna. The transmit signal originates at a local oscillator (LO), and is sufficiently low power to not saturate the receive signal path. A balun divides the local oscillator signal between the transmit path forward to the antenna and a mixer path, and also divides the received signal between the mixer path and the LO path. A mixer converts the mixed LO and received signal to baseband.
    Type: Application
    Filed: March 5, 2009
    Publication date: September 9, 2010
    Applicant: Southwest Research Institute
    Inventors: Rodney V. Landreth, William D. Davis, Robert W. Robison